Nanoscale structural refinement via deformation twinning in face-centered cubic metals

被引：237
作者：
Tao, N. R. [1 ]
Lu, K. [1 ]
机构：
[1] Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China
来源：
SCRIPTA MATERIALIA | 2009年 / 60卷 / 12期
基金：
中国国家自然科学基金;
关键词：
Deformation twinning; Structural refinement; Nanostructures; Plastic deformation; NANOSTRUCTURED SURFACE-LAYER; DYNAMIC PLASTIC-DEFORMATION; INDUCED GRAIN-REFINEMENT; MECHANICAL-PROPERTIES; COPPER; STRAIN; EVOLUTION; AL;
D O I：
10.1016/j.scriptamat.2009.02.008
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Multiple deformation twinning occurs in deformed metals and alloys under suitable conditions, resulting in the formation of twin/matrix (T/M) lamellar structures which act as precursors for strain-induced structural refinement on the nanometer scale. Four possible mechanisms for nanoscale structural refinement via T/M lamellae in various face-centered cubic metals are identified, including fragmentation of T/M lamellae, formation of secondary twins, twin-twin intersection and shear banding. The effects of processing conditions and material parameters on nanoscale twinning are analyzed. (C) 2009 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码：1039 / 1043
页数：5
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